they all may increase the chance of heart attack or stroke, which can lead to death. this chance increases if you have heart disease or risk factors such as high blood pressure or when nsaids are taken for long periods nsaids, including celebrex, increase the chance of serious skin or allergic reactions or stomach and intestine problems, such as bleeding and ulcers, which can occur without warning and may cause death. patients also taking aspirin and the elderly are at increased risk for stomach bleeding and ulcers. do not take celebrex if you've had an asthma attack, hives, or other allergies to aspirin, nsaids or sulnamides. get help right away if you have swelling of the face or throat, or trouble breathing. tell your doctor your medical history anfind an arthritis treatment for you. visit celebrex.com and ask your doctor about celebrex. for a body in motion.